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US4461420A - Ventable package cover - Google Patents

Ventable package cover Download PDF

Info

Publication number
US4461420A
US4461420A US06/436,181 US43618182A US4461420A US 4461420 A US4461420 A US 4461420A US 43618182 A US43618182 A US 43618182A US 4461420 A US4461420 A US 4461420A
Authority
US
United States
Prior art keywords
film
capping
tear line
package cover
cover according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US06/436,181
Inventor
Laszlo S. Horvath
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
COD INTER TECHNIQUES
Original Assignee
COD INTER TECHNIQUES
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Filing date
Publication date
Application filed by COD INTER TECHNIQUES filed Critical COD INTER TECHNIQUES
Assigned to COD INTER TECHNIQUES SA reassignment COD INTER TECHNIQUES SA ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: HORVATH, LASZLO S.
Application granted granted Critical
Publication of US4461420A publication Critical patent/US4461420A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants

Definitions

  • the invention refers to a vapour outlet valve for packages, consisting of a valve film (5) welded to the inner surface of the capping film of the package in such a way that it is exposed when the capping film is torn off along a predetermined rupture line (1).
  • the invention more particularly refers to a vapour outlet valve defined hereinabove, characterized in that the film comprising the valve possesses a microporous or porous structure which promotes permeability to gas and vapour, and that the physical properties of the basic material of the film may render it water-repellent and impermeable to liquids and colloids.
  • the object of the invention hereinafter described is a valve incorporated in the capping film of a package, which permits the vapours evolved during heating of the contents to escape without permitting the heating medium (usually water) to penetrate the contents.
  • the invention described hereinafter resolves the problem by incorporation of a valve in the capping film, which is only exposed immediately prior to heating of the contents of the package.
  • FIG. 1 shows a sectional view of the capping film and of the outlet valve in accordance with the invention.
  • FIG. 2 shows a sectional view of the assembly described by FIG. 1 after removal of the protective film.
  • FIG. 3 is a plan view of the outlet valve in accordance with the invention.
  • FIG. 4 describes, by way of example, a package with a tear-off capping film fitted with an outlet valve in accordance with the invention.
  • a tearing line (1) totally independent of the tearing line for opening the package is provided which, after the section of the tear-off capping film circumscribed by the tear-off line (1) is removed, creates an opening which, however, remains sealed by a film (3) welded to the inner surface of the capping film.
  • the capping film comprises three principal sections: an outer film (2) of low elasticity coated with a layer of plastic (3), the layer of plastic (3) being welded to a film (4) made of the same plastic.
  • the outermost layer must be identical to the said plastic layer (3).
  • the valve film (5) forming the object of this invention is made of the same basic material as the film (4) or the inner layer of the film (4) with which is bonded tightly and hermetically over the weld area (7) characterized by the recess (6).
  • the weld contour is represented by the line (8).
  • the valve film (5) is made of one of the well-known, water-repellent, microporous films.
  • a tearing line (1) in the form of a predetermined rupture line is provided within the line (7) which represents the weld line of the valve film, in such a way that the weld line (8) bonding the film (2) to the film (4) by the plastic layer (3) and represented in sectional view in FIG. 1 by the weld area (14) and the recess (9), covers most of the tearing line (1), with the exception of the opening tab, where the weld line (8) tapers to a point at which tearing is initiated.
  • valve film (5) is exposed immediately prior to heating.
  • the valve film (5) permits the vapour produced inside the package during heating to escape without permitting the liquid portion of the contents to escape or the water used for heating to penetrate the package.
  • the pressure built up during heating is thereby reduced and the package can be opened without the hot contents spurting out.
  • the outer film (2) is made from a material of low elasticity, such as aluminium, paper, suitable plastic or other film material of low elasticity.
  • the film (2) is coated with a thin adhesive layer (3) made of the same thermoplastic as the inner film (4).
  • an incision is made in the film (2) and the adhesive layer (3), the contour of the incision forming a predetermined rupture line (1) along which tearing will occur.
  • the film (2) is welded to the film (4) by the adhesive layer (3).
  • the film (4) possesses a biaxial molecular orientation.
  • the thermoplastic is fused to the film, thereby destroying most of the molecular orientation to which the tearing strength of the film is largely due.
  • the weld area is further weakened by a recess formed by the sealing pressure during welding. Notching produced, for example, by ridges or other surface patterns on the welding tool may induce even further weakening.
  • the capping film is torn off by gripping the opening tab with the fingers and tearing the point off first.
  • the tear is then extended along the predetermined rupture line (1) in the film until that section of the film circumscribed by the predetermined rupture line is torn off. During tearing, the weld area is torn off along the actual tearing line.
  • the purpose of the invention is the pressure relief of packages, particularly packages of foodstuffs which must be heated prior to use, preferably by immersion in boiling water.
  • the valve is hermetically sealed by the capping film prior to use; before or after heating, the capping film is torn off, thereby exposing the valve.
  • the valve is a thermoplastic, microporous or porous film welded to the inner surface of the capping film.
  • the valve film may be permeable to water vapour but impermeable to water; this precludes mixing of the water used for heating with the contents. Consequently, the contents do not spurt out when the package is opened.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Temperature-Responsive Valves (AREA)
  • Closures For Containers (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Cookers (AREA)

Abstract

A vapor outlet valve for packages, consisting of a valve film welded to the inner surface of the capping film of the package in such a way that it is exposed when a predetermined section of the capping film is torn off.

Description

SUMMARY OF THE INVENTION
The invention refers to a vapour outlet valve for packages, consisting of a valve film (5) welded to the inner surface of the capping film of the package in such a way that it is exposed when the capping film is torn off along a predetermined rupture line (1).
The invention more particularly refers to a vapour outlet valve defined hereinabove, characterized in that the film comprising the valve possesses a microporous or porous structure which promotes permeability to gas and vapour, and that the physical properties of the basic material of the film may render it water-repellent and impermeable to liquids and colloids.
BACKGROUND OF THE INVENTION
The object of the invention hereinafter described is a valve incorporated in the capping film of a package, which permits the vapours evolved during heating of the contents to escape without permitting the heating medium (usually water) to penetrate the contents.
Expansion of the liquid contents and evaporation of the aqueous constituents when the contents of a ready-to-serve meal packed in a semi-solid dish, for example, are heated results in the production of an overpressure which causes hot liquid fragments of the contents to spurt out when the package is opened. This fact may impose a restriction on the use of otherwise suitable ready-to-serve dishes.
The invention described hereinafter resolves the problem by incorporation of a valve in the capping film, which is only exposed immediately prior to heating of the contents of the package.
PREFERRED EMBODIMENTS OF THE INVENTION
FIG. 1 shows a sectional view of the capping film and of the outlet valve in accordance with the invention.
FIG. 2 shows a sectional view of the assembly described by FIG. 1 after removal of the protective film.
FIG. 3 is a plan view of the outlet valve in accordance with the invention.
FIG. 4 describes, by way of example, a package with a tear-off capping film fitted with an outlet valve in accordance with the invention.
For the purpose of this invention, a tearing line (1) totally independent of the tearing line for opening the package is provided which, after the section of the tear-off capping film circumscribed by the tear-off line (1) is removed, creates an opening which, however, remains sealed by a film (3) welded to the inner surface of the capping film.
The capping film comprises three principal sections: an outer film (2) of low elasticity coated with a layer of plastic (3), the layer of plastic (3) being welded to a film (4) made of the same plastic.
If the film (4) is a multilayer composite film, the outermost layer must be identical to the said plastic layer (3).
The valve film (5) forming the object of this invention is made of the same basic material as the film (4) or the inner layer of the film (4) with which is bonded tightly and hermetically over the weld area (7) characterized by the recess (6). The weld contour is represented by the line (8).
The valve film (5) is made of one of the well-known, water-repellent, microporous films.
During preparation of the capping film of the package, a tearing line (1) in the form of a predetermined rupture line is provided within the line (7) which represents the weld line of the valve film, in such a way that the weld line (8) bonding the film (2) to the film (4) by the plastic layer (3) and represented in sectional view in FIG. 1 by the weld area (14) and the recess (9), covers most of the tearing line (1), with the exception of the opening tab, where the weld line (8) tapers to a point at which tearing is initiated.
When the capping film is torn off along the tearing line (1) and the weld line (8), the valve film (5) is exposed, tearing of the film being facilitated by an actual tearing line.
The valve film (5) is exposed immediately prior to heating. The valve film (5) permits the vapour produced inside the package during heating to escape without permitting the liquid portion of the contents to escape or the water used for heating to penetrate the package. The pressure built up during heating is thereby reduced and the package can be opened without the hot contents spurting out.
The outer film (2) is made from a material of low elasticity, such as aluminium, paper, suitable plastic or other film material of low elasticity. The film (2) is coated with a thin adhesive layer (3) made of the same thermoplastic as the inner film (4). In a preliminary operation, an incision is made in the film (2) and the adhesive layer (3), the contour of the incision forming a predetermined rupture line (1) along which tearing will occur.
Following establishment of the predetermined rupture line (1), the film (2) is welded to the film (4) by the adhesive layer (3). Like the majority of films manufactured by blow moulding, the film (4) possesses a biaxial molecular orientation. During welding, the thermoplastic is fused to the film, thereby destroying most of the molecular orientation to which the tearing strength of the film is largely due.
The weld area is further weakened by a recess formed by the sealing pressure during welding. Notching produced, for example, by ridges or other surface patterns on the welding tool may induce even further weakening.
The capping film is torn off by gripping the opening tab with the fingers and tearing the point off first. The tear is then extended along the predetermined rupture line (1) in the film until that section of the film circumscribed by the predetermined rupture line is torn off. During tearing, the weld area is torn off along the actual tearing line.
The purpose of the invention is the pressure relief of packages, particularly packages of foodstuffs which must be heated prior to use, preferably by immersion in boiling water. The valve is hermetically sealed by the capping film prior to use; before or after heating, the capping film is torn off, thereby exposing the valve. The valve is a thermoplastic, microporous or porous film welded to the inner surface of the capping film. The valve film may be permeable to water vapour but impermeable to water; this precludes mixing of the water used for heating with the contents. Consequently, the contents do not spurt out when the package is opened.

Claims (7)

What I claim is:
1. A package cover capable of being secured to and covering a container, said cover comprising:
(a) a vapor and liquid impermeable capping film including first and second, discrete films:
(i) the first film having a tear line extending around a predetermined area, and
(ii) the second film located below and secured to the first film along at least most of said tear line to form a weakened portion in said second film extending below said at least most of the tear line to facilitate tearing the second film along the tear line; and
(b) a vapor permeable, liquid impermeable inside film located below and secured to the second film of the capping film along a path outside of and extending around said tear line, said inner film being unsecured to the second film of the capping film in said predetermined area such that tearing the capping film along the tear incision and away from the inside film exposes the inside film to the ambient atmosphere to render the package cover vapor permeable.
2. A package cover according to claim 1 wherein:
(a) the inside film is welded to the capping film along said path;
(b) the tear line is an incision extending through the thickness of said first film.
3. A package cover according to claim 1 wherein the weakened portion of the second film is formed by welding the second film to the first film directly below most of the tear line.
4. A package cover according to claim 1 wherein the weakened portion of the second film forms a recess extending below most of the tear line.
5. A package cover according to any one of claims 1-4 wherein:
(a) the first film of the capping film is constructed of a vapor and liquid impermeable material; and
(b) the second film of the capping film is constructed of the same vapor permeable, liquid impermeable material as said inside film.
6. A package cover according to claim 5 wherein the first film of the capping film includes a layer of material facing the second film, said layer being of the same material as the second film.
7. A package cover according to claim 6 wherein the layer material and second film of the capping film and the inside film are all of the same thermoplastic material and secured to each other by fusing with the fusing of the second film to the plastic layer of the first film covering the overlying tear line.
US06/436,181 1982-03-05 1982-10-22 Ventable package cover Expired - Fee Related US4461420A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1340/82 1982-03-05
CH134082 1982-03-05

Publications (1)

Publication Number Publication Date
US4461420A true US4461420A (en) 1984-07-24

Family

ID=4208190

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/436,181 Expired - Fee Related US4461420A (en) 1982-03-05 1982-10-22 Ventable package cover

Country Status (10)

Country Link
US (1) US4461420A (en)
EP (1) EP0088731B1 (en)
JP (1) JPS58171362A (en)
AT (1) ATE23837T1 (en)
CA (1) CA1193512A (en)
DE (1) DE3367895D1 (en)
DK (1) DK104083A (en)
FI (1) FI830712L (en)
GR (1) GR77954B (en)
NO (1) NO830724L (en)

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3709867A1 (en) * 1986-03-27 1987-10-01 House Food Industrial Co SEALED CONTAINER FOR USE IN COOKING
US4842875A (en) * 1986-10-06 1989-06-27 Hercules Incorporated Controlled atmosphere package
US4910032A (en) * 1988-11-16 1990-03-20 Hercules Incorporated Water-permeable controlled atmosphere packaging device from cellophane and microporous film
US4923703A (en) * 1988-03-14 1990-05-08 Hercules Incorporated Container comprising uniaxial polyolefin/filler films for controlled atmosphere packaging
US4925682A (en) * 1988-03-10 1990-05-15 Ai Shi Denshi Kogyo Kabushiki Kaisha Method and device for roasting coffee beans
US4971218A (en) * 1987-06-08 1990-11-20 Robert Bosch Gmbh Packing container with a tear off arrangement
US5407087A (en) * 1992-12-30 1995-04-18 Lever Brothers Company, Division Of Conopco, Inc. Venting closure
US5547694A (en) * 1993-03-23 1996-08-20 The Pillsbury Company Container for refrigeratable yeast-leavened doughs
US6013293A (en) * 1997-09-10 2000-01-11 Landec Corporation Packing respiring biological materials with atmosphere control member
WO2001019702A1 (en) * 1999-09-10 2001-03-22 Tecksom International Limited Packaging and/or related openable sealing means for packaging
US6376032B1 (en) 1995-05-30 2002-04-23 Landec Corporation Gas-permeable membrane
US20020090425A1 (en) * 2000-09-26 2002-07-11 Raymond Clarke Packaging of bananas
US6548132B1 (en) 1998-07-23 2003-04-15 Landec Corporation Packaging biological materials
US20040188310A1 (en) * 2003-03-31 2004-09-30 Peter Hamilton Ventable storage bag
US20040213956A1 (en) * 2003-04-25 2004-10-28 Rutherford Sales & Recovery Co., Inc. Perforated film with liquid retention and gas/vapor venting characteristics for packaging
US20050042398A1 (en) * 2003-08-18 2005-02-24 Steven Vanhamel Composite web comprising porous layer, packaging including such composite web, and integrity test method for such packaging
US20070054076A1 (en) * 2003-09-09 2007-03-08 Advanced Technology Materials, Inc. Sterile, pyrogen-free, polymeric film-based heating bag
US20070090109A1 (en) * 2003-05-30 2007-04-26 Martin Gustavsson Valve
DE102006017834A1 (en) * 2006-04-13 2007-10-18 Cfs Kempten Gmbh A microwaveable packaging
US20080176036A1 (en) * 2003-04-25 2008-07-24 Mitchell Melvin G Micro-perforated laminae and method
US7601374B2 (en) 2000-09-26 2009-10-13 Landec Corporation Packaging of respiring biological materials
US20100108671A1 (en) * 2008-11-04 2010-05-06 William Cho Pressure Relief System
US20100175850A1 (en) * 2009-01-09 2010-07-15 Kaucic Edward M Relief Vent for a Hot Fill Fluid Container
US20140262894A1 (en) * 2013-03-15 2014-09-18 Christopher Rene Jansen Radial Filtration Vent and Medical Device Packaging
WO2017084762A1 (en) 2015-11-17 2017-05-26 Amcor Flexibles France Sas Method for ripening or heat treating packaged food
US10420352B2 (en) 2012-01-23 2019-09-24 Apio, Inc. Atmosphere control around respiring biological materials

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Publication number Priority date Publication date Assignee Title
WO2008083209A2 (en) 2006-12-29 2008-07-10 Amir Genosar Hypodermic drug delivery reservoir and apparatus
US8663188B2 (en) 2007-12-28 2014-03-04 Aktivpak, Inc. Dispenser and therapeutic package suitable for administering a therapeutic substance to a subject, along with method relating to same

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US3083861A (en) * 1960-05-27 1963-04-02 Lily Tulip Cup Corp Vented container closure lids
US3158491A (en) * 1963-02-26 1964-11-24 American Can Co Food container
US3298505A (en) * 1965-02-12 1967-01-17 Brown Co Laminated closure for food trays and trays closed with same
US3410395A (en) * 1967-07-14 1968-11-12 Gen Binding Corp Steam sterilizable package and method of making the same
US3432087A (en) * 1966-09-01 1969-03-11 Alfred P Costello Package valve
US3547257A (en) * 1968-01-22 1970-12-15 American Hospital Supply Corp Package for sterile article
US3716180A (en) * 1970-06-01 1973-02-13 Robalex Inc Packaging
US3776450A (en) * 1971-03-01 1973-12-04 Christenssons Maskiner Foil for closing easily openable packages
US3806618A (en) * 1971-02-21 1974-04-23 Robalex Inc Method of heating a package of food
US3946780A (en) * 1973-01-04 1976-03-30 Sellers John C Fermentation container
DE2539351A1 (en) * 1975-09-04 1977-03-10 Mardon Flexible Packaging Ltd Multi layer protective packaging material - has removable flexible opaque outer layer covering inner transparent layer
US4055672A (en) * 1972-04-10 1977-10-25 Standard Packaging Corporation Controlled atmosphere package
US4063383A (en) * 1975-04-18 1977-12-20 H. J. Heinz Company Limited Production of mushroom spawn
US4096948A (en) * 1977-03-18 1978-06-27 American Can Company Cook-in carton with integral removable section and blank therefor
US4136796A (en) * 1974-04-11 1979-01-30 Greif Bros. Corporation Vented closure
GB2025894A (en) * 1978-06-16 1980-01-30 Perrier Heinz Sa Mushroom spawn bag

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FR1333994A (en) * 1962-07-17 1963-08-02 Hermorion Ltd Packaging intended to contain sterilized milk
DE2109940A1 (en) * 1970-03-26 1971-10-14 Fa J Plaut, Wien Anti dirt, water and atmospheric corrosion coating
DE2209393C2 (en) * 1971-02-26 1984-06-28 Christenssons Maskiner & Patenter AB, 16130 Stockholm Vacuum-tight pack with cover film with opener tab - having tabbed liner initiating tearing along line round edge
GB1392580A (en) * 1972-04-10 1975-04-30 Standard Packaging Corp Controlled atmosphere package

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US3083861A (en) * 1960-05-27 1963-04-02 Lily Tulip Cup Corp Vented container closure lids
US3158491A (en) * 1963-02-26 1964-11-24 American Can Co Food container
US3298505A (en) * 1965-02-12 1967-01-17 Brown Co Laminated closure for food trays and trays closed with same
US3432087A (en) * 1966-09-01 1969-03-11 Alfred P Costello Package valve
US3410395A (en) * 1967-07-14 1968-11-12 Gen Binding Corp Steam sterilizable package and method of making the same
US3547257A (en) * 1968-01-22 1970-12-15 American Hospital Supply Corp Package for sterile article
US3716180A (en) * 1970-06-01 1973-02-13 Robalex Inc Packaging
US3806618A (en) * 1971-02-21 1974-04-23 Robalex Inc Method of heating a package of food
US3776450A (en) * 1971-03-01 1973-12-04 Christenssons Maskiner Foil for closing easily openable packages
US4055672A (en) * 1972-04-10 1977-10-25 Standard Packaging Corporation Controlled atmosphere package
US3946780A (en) * 1973-01-04 1976-03-30 Sellers John C Fermentation container
US4136796A (en) * 1974-04-11 1979-01-30 Greif Bros. Corporation Vented closure
US4063383A (en) * 1975-04-18 1977-12-20 H. J. Heinz Company Limited Production of mushroom spawn
DE2539351A1 (en) * 1975-09-04 1977-03-10 Mardon Flexible Packaging Ltd Multi layer protective packaging material - has removable flexible opaque outer layer covering inner transparent layer
US4096948A (en) * 1977-03-18 1978-06-27 American Can Company Cook-in carton with integral removable section and blank therefor
GB2025894A (en) * 1978-06-16 1980-01-30 Perrier Heinz Sa Mushroom spawn bag

Cited By (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3709867A1 (en) * 1986-03-27 1987-10-01 House Food Industrial Co SEALED CONTAINER FOR USE IN COOKING
US4842875A (en) * 1986-10-06 1989-06-27 Hercules Incorporated Controlled atmosphere package
US4971218A (en) * 1987-06-08 1990-11-20 Robert Bosch Gmbh Packing container with a tear off arrangement
US4925682A (en) * 1988-03-10 1990-05-15 Ai Shi Denshi Kogyo Kabushiki Kaisha Method and device for roasting coffee beans
US4923703A (en) * 1988-03-14 1990-05-08 Hercules Incorporated Container comprising uniaxial polyolefin/filler films for controlled atmosphere packaging
US4910032A (en) * 1988-11-16 1990-03-20 Hercules Incorporated Water-permeable controlled atmosphere packaging device from cellophane and microporous film
US5407087A (en) * 1992-12-30 1995-04-18 Lever Brothers Company, Division Of Conopco, Inc. Venting closure
US5460282A (en) * 1992-12-30 1995-10-24 Lever Brothers Company, Division Of Conopco, Inc. Venting closure
US5547694A (en) * 1993-03-23 1996-08-20 The Pillsbury Company Container for refrigeratable yeast-leavened doughs
US5643625A (en) * 1993-03-23 1997-07-01 The Pillsbury Company Method for packaging refrigeratable yeast leavened doughs
US7169451B2 (en) 1995-05-30 2007-01-30 Landec Corporation Gas-permeable membrane
US20020054969A1 (en) * 1995-05-30 2002-05-09 Raymond Clarke Gas-permeable membrane
US6376032B1 (en) 1995-05-30 2002-04-23 Landec Corporation Gas-permeable membrane
US6013293A (en) * 1997-09-10 2000-01-11 Landec Corporation Packing respiring biological materials with atmosphere control member
US6548132B1 (en) 1998-07-23 2003-04-15 Landec Corporation Packaging biological materials
WO2001019702A1 (en) * 1999-09-10 2001-03-22 Tecksom International Limited Packaging and/or related openable sealing means for packaging
US20020090425A1 (en) * 2000-09-26 2002-07-11 Raymond Clarke Packaging of bananas
US11365045B2 (en) 2000-09-26 2022-06-21 Curation Foods, Inc. Packaging and methods of use for respiring biological materials
US8110232B2 (en) 2000-09-26 2012-02-07 Apio, Inc. Packaging of bananas
US7601374B2 (en) 2000-09-26 2009-10-13 Landec Corporation Packaging of respiring biological materials
US20090324782A1 (en) * 2001-05-15 2009-12-31 Raymond Clarke Packaging of Respiring Biological Materials
US8092848B2 (en) 2001-05-15 2012-01-10 Landec Corporation Packaging of respiring biological materials
US7004632B2 (en) 2003-03-31 2006-02-28 The Glad Products Company Ventable storage bag
US20040188310A1 (en) * 2003-03-31 2004-09-30 Peter Hamilton Ventable storage bag
US20040213956A1 (en) * 2003-04-25 2004-10-28 Rutherford Sales & Recovery Co., Inc. Perforated film with liquid retention and gas/vapor venting characteristics for packaging
US20080176036A1 (en) * 2003-04-25 2008-07-24 Mitchell Melvin G Micro-perforated laminae and method
US20070090109A1 (en) * 2003-05-30 2007-04-26 Martin Gustavsson Valve
US8911150B2 (en) * 2003-05-30 2014-12-16 Micvac Ab Valve
US7434372B2 (en) 2003-08-18 2008-10-14 Advanced Technology Materials, Inc. Packaging article comprising porous material, and method of integrity testing of same
US20050042398A1 (en) * 2003-08-18 2005-02-24 Steven Vanhamel Composite web comprising porous layer, packaging including such composite web, and integrity test method for such packaging
US7160590B2 (en) * 2003-08-18 2007-01-09 Advanced Technology Materials, Inc. Packaging including a composite web comprising porous layer
US20070107381A1 (en) * 2003-08-18 2007-05-17 Steven Vanhamel Packaging article comprising porous material, and method of integrity testing of same
US7797911B2 (en) 2003-09-09 2010-09-21 Advanced Technology Materials, Inc. Sterile, pyrogen-free, polymeric film-based heating bag
US20070054076A1 (en) * 2003-09-09 2007-03-08 Advanced Technology Materials, Inc. Sterile, pyrogen-free, polymeric film-based heating bag
US20090123614A1 (en) * 2006-04-13 2009-05-14 Cfs Kempten Gmbh Packaging which is suitable for microwaves
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FI830712A0 (en) 1983-03-02
EP0088731B1 (en) 1986-11-26
NO830724L (en) 1983-09-06
CA1193512A (en) 1985-09-17
JPS58171362A (en) 1983-10-08
FI830712L (en) 1983-09-06
GR77954B (en) 1984-09-25
DK104083A (en) 1983-09-06
EP0088731A1 (en) 1983-09-14
DE3367895D1 (en) 1987-01-15
ATE23837T1 (en) 1986-12-15
DK104083D0 (en) 1983-02-28

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